.student-list table{
    margin: 30px auto;
    border:1px solid #afd9ee;
    border-radius: 3px;
}
.student-list table td{
    padding:15px;
    text-align: center;
}

.student-list table tr:first-child{
    background: #31b0d5;
    color:#fff;
}
.w-30-p{
    width: 30px;
}
button{
    background: #31b0d5;
    color:#fff;
    border-radius: 3px;
}
.bg-orange{
    background: orange;
}
.color-fff{
    color:#fff;
}

li,ul{
    list-style: none;
}
.add-student li{
    padding: 15px;
}